Latest threads in Electronics Designshow only best voted threads
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transimpeadance vs voltage amp for photodiode
I am working on an amplifier circuit for a avalanche photodiode that is looking at very high speed 2 nsec rise 10nsec wide pulses. Previous work had been done on a circuit that uses 2 TI OPA695 X8...
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18 years ago
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Refreshing SDRAMs?
In the past I'm sure I've used a SDRAM and relied upon "Activating" and "auto-precharging" every page (ie set by row and bank address) within the 64ms refresh period to ensure that all used elements...
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18 years ago
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A resistor at 150°C...how?
Hi all, I have to buil a circuit to use a resistor as a heater; what I want is to use this resistor to heat a surface at 150 °C. My first problem is to choose right resistor(I have ONLY 15 mm...
7
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18 years ago
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7 | |
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Nixie ring counter?
There's a rumor going around that you can hook up a few resistors, capacitors, and diodes to a Nixie tube and get it to count. No extra chips, transistors, SCR's, or other 4-layer thingies. Now I...
8
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18 years ago
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Sigma Deltas
Hello, I have a couple of questions regarding Sigma Deltas again. From what I understand the simplest digital filter available for the sigma delta is the counter. That is you count the number of times...
7
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18 years ago
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7 | |
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Solder like glue ?
That means solder which likes glue. When i squeeze the "solder glue" on the joint, it will be dried in few seconds and the components are fixed on the motherboard. Of course the "solder glue" is...
19
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18 years ago
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19 | |
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buck stepdown chips
Hi, I am looking for some high frequency (1MHz+) step down buck switcher chips that can handle an input voltage of at least 7.4V and at least 500mA output current. The Texas Instruments TPS623xx...
2
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18 years ago
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New wavform discovered: the sharktooth
::::::::::::::::::::::::::::::: :: :: :: ** ** :: :: * * * * :: :: * * * * :: ::******* ***** *****:: :: :: :: :: ::::::::::::::::::::::::::::::: Scientists working for the Anglian Regional Space...
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18 years ago
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17 | |
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Which MOSFET / IGBT can afford 5A current normal operation and 40A current at 1-2 seconds?
I am considering to use a transister to be a switch for over current cut-off. It is controlling a 220AC(rectified)DC motor and monitoring it go over current or not. At normal operation, motor current...
22
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18 years ago
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I need a solution for really fast storage (GByte/sec)
Does anyone have a solution to the following problem: requirements: 1)A storage unit-system 2)with a data transfer rate of up to 5 GByte/sec (yes that is Giga) 3)Storage capacity of up to 20 TByte....
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18 years ago
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3 | |
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PCB Boards and Broad Temperature Ranges
There is an expensive board material designed to have the same thermal coefficient of expansion as copper. How important is it to use this material instead of the lower cost paper or fiberglass over...
2
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18 years ago
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LM317 Current Loop (LM34DZ)
I built a temperature sensor based on the LM317 current loop in the LM34 docs. I went this route, as the sensor is about 100 feet from the input device. But the temp is jumping up and down by a couple...
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18 years ago
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Winter School on Timing for Deep Submicron Chips, Cambridge, England, 3-7 January 2005
This Winter School will address how to mix synchronous and asynchronous techniques to build robust systems on chip. It is aimed at systems architects, VLSI designers and researchers. Check out for...
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18 years ago
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RANT - Buying online from Maxims Website From Hell
This website from hell does not reflect the rest the company. It has to be most un intuitive HTML construct on Internet. Small example - I entered quantity of 25 pc for two items in the order basket...
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18 years ago
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Microcontroller ... which one ??
Hello, I am thinking of buiying this graphic display. has a 4 analog I/O for the touch screen, and 18 I/O (the specidications are on the link "Data Sheet") I have a VERY hard time trying to figure the...
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18 years ago
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65 |